I am actually very happy with the VP150 as my center speaker. That plus the two front M80ti's are all I need in front (for now!). The M80-VP150-M80 trio create a seamless soundstage. The Denon 3805 is rated at 120wpc, and is very good in most HT's. But I am sure I will get better separation if I use a 200-300wpc amplifier for those 3 front speakers. I plan to do that later this year.

My rear M80's really shine when I am listening to multichannel music (SACD's and DVD-A's). I know they are overkill for Dolby/DTS 5.1 movies. I will probably get a pair of QS8's and use them as back speakers.

I've not tried it, and it should work OK but there is one little catch. The idea of using two center channels, one above and one below the screen, is that the two centers produce a "phantom" image that's locked in the center of the screen, which is a consideration with large 120-inch front-projector installations.

If you use two centers on each side of the TV display, there is a possibility that for viewers sitting off-axis to one side or the other, the dialog will move to the center speaker nearest the viewer, in the same way that if you just listen in stereo and sit to one side, the soundstage shifts to your side to the speaker nearest you.

With a large display, and centers to each side, the shift of dialog to one side of the screen might be perceptible and off-putting.

Incidentally, magnetic radiation from a speaker affects only Cathode-Ray Tube (CRT) displays. LCD, Plasma, DILA, and DLP displays are immune to any sort of magnetic radiation.

Interesting link. Yesterday, I finished hanging the plasma on the wall (pics soon). The change from a tube to the plasma meant that the center speaker (VP100, only) was moved from above the TV (~4.5 feet up) to around two feet off the ground, resting nicely at about the same level as the mid-range driver in the M60s. This placement was not only necessary, but prefereable from a cosmetic point of view.

I found the sound stage to be much tighter and panning was better. With the speaker lower, it is more at ear level, and voices are clearer and richer.

Comparing the two choices, I agree all the way with the problems associated with having a center channel too far above the other front speakers.

I’ll be using two M22’s on stands as a center channel. I had intended to place them about one foot apart under the screen, as high as possible. Two M60’s as centers would be pretty cool two. I don’t have room under the screen though.